The JiAmy Girls Swimming Costume 2 Piece Set, UV Sun Protection Long Sleeve Rash Guard Top and Shorts in Tie-dye Printed design is perfect for tween girls aged 9-10. This complete swimsuit set provides extensive UV sun protection, ensuring your little swimmer stays safe and protected from harsh sun rays. The breathable rash guard top with long sleeves offers both comfort and coverage, making it an ideal choice for hot summer days. Pair it with the matching shorts, designed with tie-dye prints that will surely catch the eyes of all pool dwellers. Made from high-quality, durable, and easy-to-wear fabric, this swimsuit set will be a reliable companion for your tween girl's swimming adventures.